If and i do mean if You keep running into dead ends, go into SM mode, Make a few Systems( does not matter ( unless you want the Systems to be good)) and after 3-6 Systems go back to one of your dead ends, go to the Jump point Area, Add a Jump point. Connect it to one of the New Systems.
Unless you really Having a Really Horrible Day/Week/Month, that Should give you enough Systems to No be Dead ended. If it Happens
Again. Start a New Game. I have ran into this 2-3 times Before, it has to do with the way the the Systems & warp/jump points are generated. It May have something to do with the Math of the Generation or a Option that is/was clicked.
If you have the Same Problem, Delete the Game, Bookmark the Aurora Site, reboot or Shut down. 4-8 Hours + Later Down load the Game Again.
I know drastic Solution, But it takes care of any Possible Remnants of the game/games that May be Messing with the Game running like it is Meant to.